Cooling tower and refrigerating system

Abstract

The utility model relates to a cooling tower and a refrigerating system.The cooling tower comprises a tower body (1), the tower body (1) comprises a first opening (11) and a second opening (12), the first opening (11) is formed in the bottom area of the tower body (1) and used for air inlet, and the second opening (12) is formed in the top area of the tower body (1) and used for air outlet; the spraying device (2) is arranged in the tower body (1), is positioned in the upper area of the tower body (1) and is configured to spray a cooling medium introduced from the liquid inlet pipe; the falling film assembly (3) is arranged in the tower body (1) and located below the spraying device (2), the falling film assembly (3) comprises a rotating shaft (31) and a falling film part (32), the rotating shaft (31) extends in the first direction (x) and is rotatably connected to the side wall of the tower body (1), the falling film part (32) is fixedly connected to the rotating shaft (31), and the falling film assembly (3) is configured to convert the falling cooling medium into a liquid film and scatter the liquid film.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cooling towers, and in particular to a cooling tower and a refrigeration system. Background Art

[0002] In the relevant technologies known to the inventors, most industrial cooling towers use a combination of a cooling tower body and fillers for water circulation cooling. The fillers of the cooling towers are easily clogged by solids in the circulating liquid. At the same time, affected by the water quality of the circulating cooling water that needs to be cooled, foam will be generated in the fillers. The foam generated by the foamable liquid will be carried out of the top of the filler with the air flow. The foam will hinder the liquid flowing down by gravity, and ultimately affect the effective contact area between the liquid and the filler, reducing the heat exchange efficiency of the cooling tower. In addition, regular cleaning and replacement of the filler are more troublesome. Utility Model Content

[0003] Embodiments of the present disclosure provide a cooling tower and a refrigeration system, which can improve the heat exchange efficiency of the cooling tower.

[0004] According to a first aspect of the present disclosure, a cooling tower is provided, comprising:

[0005] The tower body includes a first opening and a second opening, wherein the first opening is provided at the bottom area of ​​the tower body for air intake, and the second opening is provided at the top area of ​​the tower body for air discharge;

[0006] a spraying device, disposed within the tower body and located in an upper region of the tower body, configured to spray the cooling medium introduced from the liquid inlet pipe; and

[0007] The falling film assembly is arranged in the tower body and below the spraying device. The falling film assembly includes a rotating shaft and a falling film component. The rotating shaft extends along a first direction and is rotatably connected to the side wall of the tower body. The falling film component is fixedly connected to the rotating shaft. The falling film assembly is configured to convert the falling cooling medium into a liquid film and break it up.

[0008] In some embodiments, the falling film assembly includes a plurality of falling film components, and the plurality of falling film components are spaced apart along the first direction.

[0009] In some embodiments, the cooling tower includes a plurality of falling film assemblies spaced apart along a second direction, and falling film components of two adjacent falling film assemblies are staggered along a first direction, and the second direction is perpendicular to the first direction.

[0010] In some embodiments, the cooling tower includes a plurality of falling film assemblies spaced apart along a second direction, the second direction being perpendicular to the first direction, and the falling film assemblies are spaced apart in multiple layers along a height direction.

[0011] In some embodiments, the rotation axes of two adjacent falling film assemblies are staggered.

[0012] In some embodiments, in two adjacent layers of falling film assemblies, the number of falling film assemblies in the upper layer is one less than the number of falling film assemblies in the lower layer.

[0013] In some embodiments, the cooling tower further comprises:

[0014] The first liquid baffle is arranged in the tower body and is located between two adjacent layers of falling film assemblies along the height direction. A plurality of through holes are arranged on the first liquid baffle.

[0015] In some embodiments, the first liquid blocking plate includes a first curved portion that protrudes upward as a whole and is configured to block the upwardly flowing cooling medium generated by the rotation of the adjacent falling film assembly below.

[0016] In some embodiments, the cooling tower further comprises:

[0017] The second liquid baffle is arranged in the tower body and is located between the spray device and the falling film assembly along the height direction. A plurality of through holes are arranged on the plate body of the second liquid baffle.

[0018] In some embodiments, the second liquid blocking plate includes a second curved portion that protrudes upward as a whole and is configured to block the upward flow of cooling medium generated by the rotation of the adjacent falling film assembly below.

[0019] In some embodiments, the falling film component includes a plurality of falling film units arranged along the circumference of the rotating shaft, and the falling film units include:

[0020] A first plate, one end of which is connected to the rotating shaft and configured to spread the cooling medium on the surface of the plate to form a liquid film; and

[0021] The second plate is connected to an end of the first plate away from the rotation axis, and the second plate forms a preset angle with the first plate. The second plate is provided with a plurality of through holes, and the second plate is configured to break up the liquid film.

[0022] In some embodiments, the second plate is an arc-shaped plate, and the center of the circle where the arc-shaped plate is located is located on the rotation axis of the rotation shaft.

[0023] In some embodiments, the second plate includes a first portion and a second portion, the first portion and the second portion are respectively located on both sides of the first plate along the thickness direction, and the ends of the first portion and the second portion away from the first plate are both inclined toward a direction close to the rotation axis.

[0024] In some embodiments, the second plate includes a first portion and a second portion, and the first portion and the second portion are symmetrically arranged relative to the first plate.

[0025] In some embodiments, a plurality of protrusions are provided on the first plate, and the protrusion amounts of the plurality of protrusions gradually decrease from an end close to the rotation axis to an end far from the rotation axis.

[0026] In some embodiments, the falling film unit includes two first plates and two second plates, and the falling film unit further includes:

[0027] A connecting portion connected between one end of two adjacent first plates close to the rotating shaft, wherein a side of the connecting portion close to the rotating shaft is an arc-shaped end surface, and the falling film unit is detachably connected to the rotating shaft through the connecting portion;

[0028] Among them, the rotating shaft is provided with multiple accommodating grooves along the circumferential direction at the same axial position, the accommodating grooves extend along the first direction, the accommodating grooves are configured to cooperate with the arc-shaped end surface of the connecting part, and the multiple accommodating grooves are arranged one-to-one with the multiple falling film units along the circumferential direction.

[0029] In some embodiments, the rotating shaft has multiple groups of receiving grooves opened along the first direction, multiple falling film units are provided along the first direction, and the multiple receiving grooves are arranged in a one-to-one correspondence with the multiple falling film units along the first direction.

[0030] In some embodiments, a first limiting portion is provided on the connecting portion, and a second limiting portion is provided at the first end of the accommodating groove. The first limiting portion and the second limiting portion cooperate to axially limit the falling film unit.

[0031] In some embodiments, a mounting groove is provided between the second end of the accommodating groove and the shaft body of the rotating shaft, and the mounting groove is configured to provide a space for the falling film unit to selectively slide along the first direction.

[0032] In some embodiments, the cooling tower further comprises:

[0033] The driving mechanism is provided on the outer wall of the tower body and is configured to drive the rotating shaft to rotate. The driving mechanism includes a driving assembly and a transmission assembly. The transmission assembly includes a first gear, which is fixedly connected to the rotating shaft. The output end of the driving assembly is transmission-connected to the first gear, and the driving assembly is configured to drive the first gear to rotate.

[0034] In some embodiments, the cooling tower includes a plurality of falling film assemblies spaced apart along a second direction, the second direction being perpendicular to the first direction, the transmission assembly includes a plurality of first gears, the plurality of first gears are arranged in one-to-one correspondence with the plurality of rotating shafts, and two adjacent first gears along the second direction are meshed with each other.

[0035] In some embodiments, the transmission assembly further includes a third gear and a first synchronous belt, the third gear is coaxially connected to the first gear, and the first synchronous belt is connected between the output end of the drive assembly and the third gear.

[0036] In some embodiments, the falling film assembly is provided with a first layer and a second layer spaced apart in a height direction, the first layer is lower than the second layer, the third gear is fixedly connected to a first gear of the first layer, and the transmission assembly further comprises:

[0037] a fourth gear fixedly connected to another first gear on the first layer;

[0038] a fifth gear fixedly connected to a first gear on the second layer; and

[0039] The second synchronous belt is connected between the fourth gear and the fifth gear.

[0040] In some embodiments, the drive assembly further comprises:

[0041] a turbo vane pump configured to convert kinetic energy of the cooling medium into mechanical energy of rotation of the output end; and

[0042] The second gear is connected to the output end of the turbine vane pump, and the second gear is transmission-connected to the first gear.

[0043] In some embodiments, the drive assembly further comprises:

[0044] a transmission connected between the output end of the turbo impeller pump and the second gear, wherein the transmission ratio of the transmission is adjustable; and

[0045] The speed sensor is configured to detect the speed of the transmission output shaft to determine the timing for adjusting the transmission gear ratio.

[0046] According to a second aspect of the present disclosure, a refrigeration system is provided, comprising:

[0047] condenser; and

[0048] The cooling tower of the above embodiment is used to cool the high-temperature cooling medium from the condenser.

[0049] Based on the above technical solution, the cooling tower of the embodiment of the present invention replaces the filler with a falling film component, which is more open than the traditional filler, can avoid the foaming of the foaming cooling medium, and even if foam is generated, the foam can be broken up and thrown away as the falling film component rotates, which can avoid the foam affecting the heat exchange between the air and the cooling medium and improve the heat exchange efficiency; the falling film component of the cooling tower is easy to maintain and disassemble, and the rotating motion of the falling film component makes the falling film component less likely to adhere to impurities and scale, which can avoid the reduction of heat exchange effect caused by scaling after long-term use; the falling cooling medium is converted into a liquid film and broken up by the falling film component, which can increase the effective contact area between the cooling medium and the air and significantly improve the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of this application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0051] Figure 1Schematic diagram of the structure of some embodiments of the cooling tower disclosed herein.

[0052] Figure 2 for Figure 1 main view.

[0053] Figure 3 for Figure 1 Partial side sectional view.

[0054] Figure 4 Schematic diagram of the structure of some embodiments of the first liquid baffle of the cooling tower disclosed in the present invention.

[0055] Figure 5 Schematic diagram of the structure of some embodiments of the second liquid baffle of the cooling tower disclosed in the present invention.

[0056] Figure 6 Schematic diagram of the structure of some embodiments of the falling film assembly of the cooling tower of the present disclosure.

[0057] Figure 7 Schematic diagram of the structure of some embodiments of the falling film unit of the cooling tower disclosed in the present invention from a first perspective.

[0058] Figure 8 Schematic diagram of the structure of some embodiments of the falling film unit of the cooling tower disclosed in the present invention from a second perspective.

[0059] Figure 9 Schematic diagram of the structure of some embodiments of the rotating shaft of the cooling tower disclosed in the present invention.

[0060] Description of Reference Numerals

[0061] 1. Tower body; 2. Spraying device; 3. Falling film assembly; 4. First liquid baffle; 5. Second liquid baffle; 6. Driving mechanism; 7. Fan;

[0062] 11. First opening; 12. Second opening; 30. Falling film assembly; 31. Rotating shaft; 310. Accommodating groove; 311. Mounting groove; 32. Falling film component; 320. Falling film unit; 321. First plate; 312. Second limiting portion; 322. Second plate; 323. Connecting portion; 324. Protruding portion; 325. Arc-shaped end surface; 326. First limiting portion; 327. Flat plate; 328. Connecting hole; 301. First portion; 30 2. Second part; 41. First bend; 52. Second bend; 61. Drive assembly; 611. Turbine impeller pump; 612. Second gear; 613. Transmission; 614. Third opening; 62. Transmission assembly; 621. First gear; 623. Third gear; 624. Fourth gear; 625. Fifth gear; 626. First synchronous belt; 627. Second synchronous belt; x, first direction; y, second direction; z, third direction. DETAILED DESCRIPTION

[0063] The present disclosure is described in detail below. In the following paragraphs, various aspects of the embodiments are defined in more detail. Each aspect defined in this manner may be combined with any other aspect or aspects unless expressly stated not to be combinable. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features considered to be preferred or advantageous.

[0064] The terms "first" and "second" appearing in this disclosure are only for the convenience of description to distinguish different components with the same name, and do not indicate a priority or primary and secondary relationship.

[0065] In the description of the present disclosure, it should be understood that the terms "inside", "outside", "up", "down", "left" and "right" and the like indicating directions or positional relationships are defined based on the tower body or the rotation axis and the like, and are only used to facilitate the description of the present disclosure, and do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present disclosure.

[0066] First, if Figures 1 to 9 As shown, the present disclosure proposes a cooling tower, comprising:

[0067] The tower body 1 includes a first opening 11 and a second opening 12. The first opening 11 is provided at the bottom area of ​​the tower body 1 for air intake, and the second opening 12 is provided at the top area of ​​the tower body 1 for air discharge.

[0068] a spraying device 2, disposed in the tower body 1 and located in the upper region of the tower body 1, configured to spray the cooling medium introduced from the liquid inlet pipe; and

[0069] The falling film assembly 3 is arranged in the tower body 1 and below the spray device 2. The falling film assembly 3 includes a rotating shaft 31 and a falling film component 32. The rotating shaft 31 extends along the first direction x and is rotatably connected to the side wall of the tower body 1. The falling film component 32 is fixedly connected to the rotating shaft 31. The falling film assembly 3 is configured to convert the falling cooling medium into a liquid film and break it up.

[0070] Specifically, the cooling tower is used to cool the cooling medium sprayed by the spray device 2, for example, by exchanging heat between the cooling medium and the air. Specifically, the cooling medium flows from top to bottom, while the air flows from the first opening 11 to the second opening 12 from bottom to top, ensuring full contact between the cooling medium and the air and achieving heat exchange. Specifically, the spray device 2 is positioned vertically between the second opening 12 and the falling film assembly 3. Specifically, the cooling medium falling from the spray device 2 is converted into a liquid film by the falling film assembly 3 and dispersed, thereby increasing the contact area between the cooling medium and the air.

[0071] Specifically, when the circulating cooling medium that needs to be cooled falls from top to bottom, it falls on the falling film assembly 3 in the form of a water curtain or water droplets. After the water curtain or water droplets spread out, a thin liquid film is formed. This process is called "falling film".

[0072] Specifically, the falling film component 32 of the falling film assembly 3 generates centrifugal force by rotating about the rotation axis 31. Specifically, the falling film component 32 is provided with gaps along the circumference of the rotation axis 31. The falling cooling medium enters the falling film assembly 3 through the gaps. Under the combined effects of gravity, centrifugal force, vacuum adsorption, and airflow, the cooling medium spreads onto the falling film component 32 into a thin liquid film. The falling film component 32 further breaks up the liquid film to form droplets or night mist. During this process, the air and the cooling medium are in full contact, which can significantly improve the heat exchange efficiency.

[0073] Optionally, the first direction x can lie within the horizontal plane or form a certain angle with the horizontal plane. Optionally, the falling film assembly 3 can be provided with one or more elements along the second direction y, with the second direction y being perpendicular to the first direction x. Optionally, the height direction can be the third direction z, which is perpendicular to both the first and second directions x and y. Optionally, the falling film component 32 can be provided with one element along the first direction x, for example, the falling film component 32 extends along the first direction x, or multiple elements 32 can be provided along the first direction x. Optionally, the falling film component 32 can be detachably connected to the rotating shaft 31 for easy disassembly and maintenance.

[0074] Optionally, the cooling tower of the present disclosure can be applicable to a refrigeration cycle, for example, the cooling medium can be a high-temperature cooling medium from a condenser, and can also be applicable to a thermoelectric cycle, etc. Optionally, the cooling medium can be cooling water, etc. Optionally, the first opening 11 can be provided in an area near the bottom of the side wall of the tower body 1, or can be provided on the bottom wall of the tower body 1. Optionally, the spray device 2 can be provided with a plurality of nozzles to spray the cooling medium. Optionally, the liquid inlet pipe can be connected to the third opening 614, and the third opening 614 is the liquid inlet of the turbine impeller pump 611. Optionally, the cooling tower can also include a fan 7, which is used to provide a driving force for the flow of air, etc. from the first opening 11 to the second opening 12.

[0075] Specifically, impurities may be present in the cooling medium, some of which vaporize to produce foam. If filler is used, the foam will be carried out of the top of the filler by the airflow, obstructing the liquid flowing downward by gravity, ultimately reducing the amount of contact between the air and the cooling liquid, and reducing the cooling effect. However, the cooling tower of this application uses a falling film assembly 3 instead of filler. The falling film assembly 3 is more open than the filler, and even if foam is generated, it will be broken up and thrown away as the falling film component 32 rotates.

[0076] The cooling tower of this embodiment replaces the filler with a falling film component, which is more open than traditional fillers and can prevent the foaming cooling medium from generating foam. Even if foam is generated, the foam can be broken up and thrown away as the falling film component rotates, which can prevent the foam from affecting the heat exchange between the air and the cooling medium and improve the heat exchange efficiency. The falling film component of the cooling tower is easy to maintain and disassemble, and the rotating motion of the falling film component makes the falling film component less likely to adhere to impurities and scale, which can avoid the reduction of heat exchange effect caused by scaling after long-term use. The falling cooling medium is converted into a liquid film and broken up by the falling film component, which can increase the effective contact area between the cooling medium and the air and significantly improve the heat exchange efficiency.

[0077] In some embodiments, as Figures 1 to 6 As shown, the falling film assembly 3 includes a plurality of falling film components 32, which are spaced apart along a first direction x. Optionally, the plurality of falling film components 32 may contact each other along the first direction x. Optionally, the plurality of falling film components 32 may have the same or different sizes.

[0078] This embodiment arranges a plurality of falling film components at intervals along the first direction, thereby covering a larger range in the first direction, achieving heat exchange with a larger flow rate of cooling medium, and improving the heat exchange efficiency of the cooling tower.

[0079] In some embodiments, as Figures 1 to 3 As shown, the cooling tower includes a plurality of falling film assemblies 3 spaced apart along a second direction y, wherein the falling film components 32 of two adjacent falling film assemblies 3 are staggered along a first direction x, and the second direction y is perpendicular to the first direction x. Optionally, the sizes of the plurality of falling film assemblies 3 may be the same or different.

[0080] This embodiment arranges multiple falling film assemblies at intervals along the second direction, which can cover a larger range in the second direction; the falling film components of two adjacent falling film assemblies are staggered along the first direction, which can increase the density of the falling film components while avoiding interference between the falling film components, realize cooling of a larger flow rate of cooling medium, improve cooling uniformity, and improve the heat exchange efficiency and heat exchange uniformity of the cooling tower.

[0081] In some embodiments, as Figures 1 to 3 As shown, the cooling tower includes a plurality of falling film assemblies 3 spaced apart along a second direction y, which is perpendicular to the first direction x. The falling film assemblies 3 are spaced apart in multiple layers along the height direction. Optionally, the number of falling film assemblies 3 in each layer can be the same or different. For example, two layers of falling film assemblies 3 can be provided, with N number of falling film assemblies in the upper layer and N+1 number of falling film assemblies in the lower layer. This prevents the cooling medium from bypassing the falling film assemblies 3 and falling. The falling film assemblies 3 in the lower layer can collect any cooling medium that is not fully contacted and is ejected from both sides of the falling film assemblies 3 in the upper layer, thereby achieving uniform heat dissipation.

[0082] In this embodiment, by arranging multiple layers of falling film components in the height direction, the falling time of the cooling medium can be prolonged, the cooling medium can be fully contacted with the air, and the heat exchange efficiency can be improved.

[0083] In some embodiments, as Figures 1 to 3 As shown, the rotation axes 31 of two adjacent falling film assemblies 3 are staggered.

[0084] This embodiment can prevent the cooling medium from falling around the falling film assembly at a lower height by staggering the rotating axes of two adjacent falling film assemblies, so that the cooling medium can fully contact the falling film component and achieve uniform cooling of the cooling medium.

[0085] In some embodiments, as Figures 1 to 3 As shown, in two adjacent layers of falling film assemblies 3 , the number of falling film assemblies 3 in the upper layer is one less than the number of falling film assemblies 3 in the lower layer.

[0086] In this embodiment, the number of upper falling film assemblies is one less than that of lower falling film assemblies, thereby avoiding incomplete contact between the cooling medium and the falling film assemblies, preventing the cooling medium from bypassing the falling film assemblies, and thus achieving uniform cooling of the cooling medium.

[0087] In some embodiments, as Figures 1 to 4 As shown, the cooling tower also includes:

[0088] The first liquid baffle plate 4 is provided in the tower body 1 and is located between two adjacent layers of falling film assemblies 3 along the height direction. The first liquid baffle plate 4 is provided with a plurality of through holes.

[0089] Specifically, after the cooling medium passes through a layer of falling film assembly 3, the droplets or liquid mist first falls to the first liquid baffle 4 and then falls through the through hole to the falling film assembly 3 below, which can slow down the falling speed of the cooling medium, reduce the falling noise of the cooling medium, and improve the heat exchange efficiency of the cooling tower.

[0090] This embodiment can slow down the falling speed of the cooling medium, increase the contact time between the cooling medium and the air, enhance the heat exchange effect, and improve the heat exchange efficiency of the cooling tower by setting a first liquid baffle between two adjacent layers of falling film components; the cooling medium first falls onto the first liquid baffle and then falls into the next layer of falling film components, which can reduce the falling height of the cooling medium, reduce the falling noise of the cooling medium, and achieve a reduction in the overall noise of the cooling tower.

[0091] In some embodiments, as Figures 1 to 4 As shown, the first liquid baffle 4 includes a first curved portion 41 , which protrudes upward as a whole and is configured to block the upward-flowing cooling medium generated by the rotation of the adjacent falling film assembly 3 below.

[0092] Specifically, among the adjacent falling film assemblies 3 below, the falling film assembly 3 on the left rotates counterclockwise, and the falling film assembly 3 on the right rotates clockwise, and the two falling film assemblies 3 rotate together to generate an upward flow of cooling medium.

[0093] Optionally, the first curved portion 41 may extend along the first direction x or be spaced apart along the first direction x. For example, the first curved portion 41 may be provided only above the upwardly flowing cooling medium along the first direction x, with no first curved portion 41 provided elsewhere. Alternatively, the first curved portion 41 may be provided without through-holes, or with a reduced number of through-holes. Alternatively, the number of first curved portions 41 may be adapted to the number of falling film modules 3 below, and one or more, for example, two, may be provided.

[0094] This embodiment provides a first curved portion on the first liquid baffle, which can block the upward flow of cooling medium generated by the rotation of the adjacent falling film assembly below, thereby preventing the cooling medium with a lower temperature in the lower falling film assembly from being secondary heated by the cooling medium at a higher position, thereby improving the cooling efficiency; at the same time, the cooling medium falls along the curved surface, which can also reduce the falling speed of the cooling medium, increase the contact time between the cooling medium and the air, enhance the heat exchange effect, and improve the heat exchange efficiency of the cooling tower.

[0095] In some embodiments, as Figures 1 to 5 As shown, the cooling tower also includes:

[0096] The second liquid baffle plate 5 is provided in the tower body 1 and is located between the spray device 2 and the falling film assembly 3 along the height direction. The second liquid baffle plate 5 is provided with a plurality of through holes.

[0097] Specifically, the second liquid baffle 5 is located between the spray device 2 and the topmost falling film assembly 3. Specifically, the cooling medium falls on the second liquid baffle 5 in the form of a water curtain through the spray device 2, and then falls through the through-hole to the falling film assembly 3 below. This can slow down the falling speed of the cooling medium, reduce the water spraying noise, and improve the heat exchange efficiency of the cooling tower.

[0098] This embodiment sets a second liquid baffle between the spray device and the falling film assembly, which can slow down the falling speed of the cooling medium, increase the contact time between the cooling medium and the air, enhance the heat exchange effect, and improve the heat exchange efficiency of the cooling tower; the cooling medium sprayed by the spray device first falls on the second liquid baffle and then falls into the falling film assembly, which can reduce the relative spraying height of the spray device, reduce the spraying noise, and achieve a reduction in the overall noise of the cooling tower.

[0099] In some embodiments, the second liquid blocking plate 5 includes a second curved portion 52 , which protrudes upward as a whole and is configured to block the upward-flowing cooling medium generated by the rotation of the adjacent falling film assembly 3 below.

[0100] Specifically, among the adjacent falling film assemblies 3 below, the falling film assembly 3 on the left rotates counterclockwise, and the falling film assembly 3 on the right rotates clockwise, and the two falling film assemblies 3 rotate together to generate an upward flow of cooling medium.

[0101] Optionally, the second curved portion 52 may extend along the first direction x or be spaced apart along the first direction x. For example, the second curved portion 52 may be provided only above the upwardly flowing cooling medium along the first direction x, with no second curved portion 52 provided elsewhere. Alternatively, the second curved portion 52 may be provided without through-holes, or with a reduced number of through-holes. Alternatively, the number of second curved portions 52 may be adapted to the number of falling film modules 3 below, and one or more, for example, one, may be provided.

[0102] This embodiment provides a second curved portion on the second liquid baffle, which can block the upward flow of cooling medium generated by the rotation of the adjacent falling film assembly below, and can avoid the cooling medium cooled by the falling film assembly from being reheated by the cooling medium sprayed by the spray device, thereby improving the cooling efficiency; at the same time, the cooling medium falls along the curved surface, which can also reduce the falling speed of the cooling medium, increase the contact time between the cooling medium and the air, enhance the heat exchange effect, and improve the heat exchange efficiency of the cooling tower.

[0103] During the production process, the inventor discovered that in a traditional packed cooling tower, when the cooling medium flows into the packing layer, impurities will adhere to the inside of the packing. As time goes by, the impurities will continue to increase, the packing channel will be blocked, and the heat dissipation effect will be greatly reduced, requiring the entire piece to be replaced.

[0104] To solve the above problems, in some embodiments, Figures 1 to 8 As shown, the falling film component 32 includes a plurality of falling film units 320 arranged along the circumference of the rotating shaft 31, and the falling film unit 320 includes:

[0105] A first plate 321 , one end of which is connected to the rotating shaft 31 and is configured to spread the cooling medium on the plate surface to form a liquid film; and

[0106] The second plate 322 is connected to the end of the first plate 321 away from the rotating shaft 31 , and the second plate 322 forms a preset angle with the first plate 321 . The second plate 322 is provided with a plurality of through holes, and is configured to break up the liquid film.

[0107] Specifically, after the falling cooling medium enters the falling film assembly 3, it is spread out onto the surface of the first plate 321 into a thin liquid film due to the combined effects of gravity, centrifugal force, vacuum adsorption, and airflow. This increases the contact area between the cooling medium and the air. Specifically, due to the continuous rotation of the falling film assembly 32, when the liquid film flows to the end of the first plate 321 away from the rotating shaft 31, it is subjected to centrifugal force and strikes the second plate 322. The through-holes in the second plate 322 then break the liquid film into droplets or a mist. During this process, the air and the cooling medium are in full contact, significantly improving heat exchange efficiency.

[0108] Optionally, the falling film unit 320 is detachably connected to the rotating shaft 31. By removing a single falling film unit 320 for cleaning or replacement, the falling film unit 320 can be cleaned in a targeted manner, improving cleaning convenience. Optionally, the first plate 321 can extend in the radial direction of the rotating shaft 31, or can be at a certain angle to the radial direction of the rotating shaft 31, for example, all the first plates 321 are deflected in the same direction relative to the radial direction of the rotating shaft 31. Optionally, the rotating shaft 31 can be parallel to the first plate 321, or can be at a certain angle to the first plate 321, for example, similar to the arrangement of the diagonal flow blades of a fan. Optionally, the rotating shaft 31 can be parallel to the second plate 322, or can be at a certain angle to the second plate 322. Optionally, the second plate 322 can be tile-shaped, etc.

[0109] This embodiment spreads the cooling medium into a liquid film through the first plate, and breaks up the liquid film into droplets or liquid mist through the second plate. Under the joint action of the two, a more perfect cooling effect can be achieved, and the contact area between the cooling medium and the air can be increased, so that the air and the cooling medium are in full contact, thereby improving the heat exchange efficiency; at the same time, the open falling film unit is connected to the rotating shaft, which can avoid impurities from adhering or clogging, improve the heat dissipation effect, and a single falling film unit can be disassembled for cleaning or replacement.

[0110] In some embodiments, the second plate 322 is an arc-shaped plate, and the center of the circle where the arc-shaped plate is located is located on the rotation axis of the rotation shaft 31 .

[0111] The second plate of this embodiment is an arc-shaped plate, which can increase the collision probability and effective collision area between the water film and the second plate, improve the dropletization or atomization efficiency of the water film, and improve the heat exchange efficiency; at the same time, the second plate being an arc-shaped plate can also reduce the manufacturing and installation costs of the falling film unit.

[0112] In some embodiments, as Figure 7 and Figure 8 As shown, the second plate 322 includes a first part 301 and a second part 302, which are respectively located on both sides of the first plate 321 along the thickness direction, and the ends of the first part 301 and the second part 302 away from the first plate 321 are both inclined toward the direction close to the rotation axis 31.

[0113] The first part and the second part of this embodiment are respectively located on both sides of the first plate along the thickness direction, which can effectively break up the liquid films formed on both sides of the first plate, thereby improving the dropletization or atomization efficiency of the water film and improving the heat exchange efficiency; at the same time, the first part and the second part are both inclined in the direction close to the rotation axis, which can increase the collision probability and effective collision area between the water film and the second plate.

[0114] In some embodiments, as Figure 7 and Figure 8 As shown, the second plate 322 includes a first portion 301 and a second portion 302 , and the first portion 301 and the second portion 302 are symmetrically arranged relative to the first plate 321 .

[0115] In this embodiment, the first part and the second part are symmetrically arranged relative to the first plate, thereby improving the dropletization or atomization efficiency of the water film and reducing the manufacturing cost of the falling film unit.

[0116] In some embodiments, as Figure 7 and Figure 8 As shown, the first plate 321 is provided with a plurality of protrusions 324, and the protrusions of the plurality of protrusions 324 gradually decrease from the end close to the rotation axis 31 to the end away from the rotation axis 31. Optionally, the thickness of the first plate 321 gradually decreases from the end close to the rotation axis 31 to the end away from the rotation axis 31. Optionally, the plurality of protrusions 324 are provided on both sides of the first plate 321 along the thickness direction.

[0117] This embodiment provides a plurality of protrusions on the first plate, the protrusion amount of which gradually decreases from the end close to the rotating axis to the end far from the rotating axis, so that the liquid film of the cooling medium passes through the plurality of protrusions to reach the second plate under the action of centrifugal force, etc., which can gradually reduce the spread thickness of the liquid film, improve the heat exchange efficiency between the liquid film and the air, and at the same time improve the dropletization or atomization efficiency of the water film.

[0118] In some embodiments, as Figures 1 to 8 As shown, the falling film unit 320 includes two first plates 321 and two second plates 322. The falling film unit 320 also includes:

[0119] A connecting portion 323 is connected between two adjacent first plates 321 at one end close to the rotating shaft 31 . The side of the connecting portion 323 close to the rotating shaft 31 is an arc-shaped end surface 325 . The falling film unit 320 is detachably connected to the rotating shaft 31 via the connecting portion 323 .

[0120] Among them, the rotating shaft 31 is provided with multiple accommodating grooves 310 along the circumferential direction at the same axial position, the accommodating grooves 310 extend along the first direction x, and the accommodating grooves 310 are configured to cooperate with the arc-shaped end surface 325 of the connecting portion 323. The multiple accommodating grooves 310 are arranged one-to-one correspondingly with the multiple falling film units 320 along the circumferential direction.

[0121] Optionally, a connecting hole 328 is provided on the connecting portion 323, and a mounting portion that cooperates with the connecting hole 328 is provided on the receiving groove 310. The falling film unit 320 is detachably connected to the receiving groove 310 of the rotating shaft 31 through the connecting hole 328. For example, the mounting portion can be a threaded hole, etc., and a fastener is assembled and fastened through the connecting hole 328 and the reserved threaded hole of the receiving groove 310. Optionally, the two first plates 321 of the falling film unit 320 are V-shaped.

[0122] The falling film unit of this embodiment is detachably connected to the rotating shaft through a connecting part, which can avoid impurities from adhering or clogging and improve the heat dissipation effect. When necessary, a single falling film unit can be disassembled for cleaning or replacement, and the falling film unit can be cleaned in a targeted manner, thereby improving the convenience of cleaning.

[0123] In some embodiments, as Figures 1 to 9 As shown, the rotating shaft 31 has multiple groups of receiving grooves 310 along the first direction x, and multiple falling film units 320 are provided along the first direction x. The multiple receiving grooves 310 are arranged one-to-one with the multiple falling film units 320 along the first direction x.

[0124] In this embodiment, the plurality of falling film units are arranged in a one-to-one correspondence with the plurality of containing tanks, thereby improving the convenience of disassembly and assembly and cleaning of the falling film units.

[0125] In some embodiments, as Figure 7 and Figure 8 As shown, a first limiting portion 326 is provided on the connecting portion 323, and a second limiting portion 312 is provided at the first end of the accommodating groove 310. The first limiting portion 326 and the second limiting portion 312 cooperate to axially limit the falling film unit 320. Optionally, the first limiting portion 326 can be a limiting groove, etc., and the second limiting portion 312 can be a positioning boss, etc.

[0126] This embodiment uses the first limiting portion and the second limiting portion to cooperate to axially limit the falling film unit, which can improve the installation stability of the falling film unit, prevent the falling film unit from falling off during the rotation of the rotating shaft, and improve the operating stability of the falling film assembly and the cooling tower.

[0127] In some embodiments, as Figure 6 and Figure 9 As shown, a mounting groove 311 is provided between the second end of the accommodating groove 310 and the shaft body of the rotating shaft 31 , and the mounting groove 311 is configured to provide a space for the falling film unit 320 to selectively slide along the first direction x.

[0128] Specifically, the mounting groove 311 is adapted to fit within the second limiting portion 312, such as a positioning boss, that occupies the space of the receiving groove 310. Specifically, during assembly, the right side of the curved end surface 325 of the falling film unit 320 is aligned with the receiving groove 310, while the left side is located in the mounting groove 311. The sidewall of the curved end surface 325 is aligned with the sidewall of the receiving groove 310, causing the falling film unit 320 to be pushed rightward until the first limiting portion 326 is fully aligned with the second limiting portion 312, for example, the limiting groove is fully aligned with the positioning boss. Specifically, after the first limiting portion 326 is fully aligned with the second limiting portion 312, the fasteners are assembled and fastened to the reserved threaded holes of the receiving groove 310 through the connecting holes 328. The plurality of falling film units 320 are circumferentially fixed to the rotating shaft 31 to form the falling film assembly 3.

[0129] Similarly, during the disassembly process, after removing the fastener, due to the presence of the mounting groove 311, the descending film unit 320 can slide to the left along the first direction x until the first limiting portion 326 and the second limiting portion 312 are completely disengaged, and then the descending film unit 320 can be removed, for example, after the limiting groove and the positioning boss are completely disengaged, it can be disassembled.

[0130] This embodiment provides space for the falling film unit to slide along the first direction through the mounting groove, thereby improving the convenience of disassembly and assembly of the falling film unit and improving the disassembly and assembly efficiency of the falling film unit.

[0131] In some embodiments, as Figure 1 and Figure 2 As shown, the cooling tower also includes:

[0132] The drive mechanism 6 is provided on the outer wall of the tower body 1 and is configured to drive the rotation shaft 31 to rotate. The drive mechanism 6 includes a drive assembly 61 and a transmission assembly 62. The transmission assembly 62 includes a first gear 621. The first gear 621 is fixedly connected to the rotation shaft 31. The output end of the drive assembly 61 is transmission-connected to the first gear 621. The drive assembly 61 is configured to drive the first gear 621 to rotate. Optionally, the drive assembly 61 may include any drive component such as an electric motor, a hydraulic motor, or a turbo impeller pump.

[0133] In this embodiment, the driving assembly drives the first gear of the transmission assembly to rotate to drive the rotating shaft to rotate, which can improve the rotation stability of the rotating shaft and improve the operating stability of the cooling tower.

[0134] In some embodiments, as Figure 1 and Figure 2 As shown, the cooling tower includes a plurality of falling film components 3 arranged at intervals along the second direction y, the second direction y is perpendicular to the first direction x, and the transmission component 62 includes a plurality of first gears 621, and the plurality of first gears 621 are arranged in a one-to-one correspondence with the plurality of rotating shafts 31, and two adjacent first gears 621 along the second direction y are engaged with each other.

[0135] In this embodiment, the two first gears adjacent to each other in the second direction are meshed with each other, so that the rotation of one first gear can drive the rotation of all other first gears on the same layer, which can improve the rotational stability and consistency of multiple rotating shafts, and at the same time reduce the number of driving components and reduce the energy consumption of the cooling tower.

[0136] In some embodiments, as Figure 1 and Figure 2 As shown, the transmission assembly 62 further includes a third gear 623 and a first synchronous belt 626 . The third gear 623 is coaxially connected to the first gear 621 . The first synchronous belt 626 is connected between the output end of the driving assembly 61 and the third gear 623 .

[0137] The first synchronous belt of this embodiment is connected between the output end of the drive assembly and the third gear, which enables the output end of the drive assembly and the third gear to be arranged at different heights, thereby optimizing the layout of the drive assembly; at the same time, when the drive assembly includes a turbine impeller pump, the turbine impeller pump can also be set at a lower position to fully utilize the kinetic energy of the cooling medium.

[0138] In some embodiments, as Figure 1 and Figure 2 As shown, the falling film assembly 3 is provided with a first layer and a second layer in the height direction, the first layer is lower than the second layer, the third gear 623 is fixedly connected to a first gear 621 of the first layer, and the transmission assembly 62 further includes:

[0139] The fourth gear 624 is fixedly connected to the other first gear 621 of the first layer;

[0140] a fifth gear 625 fixedly connected to a first gear 621 of the second layer; and

[0141] The second synchronous belt 627 is connected between the fourth gear 624 and the fifth gear 625 .

[0142] This embodiment is connected between the fourth gear of the first layer and the fifth gear of the second layer through the second synchronous belt, which can transmit driving force between the multi-layer rotating shafts, improve the rotation stability and consistency of the multi-layer rotating shafts, and at the same time reduce the number of driving components and reduce the energy consumption of the cooling tower.

[0143] In some embodiments, as Figure 1 and Figure 2 As shown, the drive assembly 61 further includes:

[0144] a turbo vane pump 611 configured to convert the kinetic energy of the cooling medium into mechanical energy for rotation of the output end; and

[0145] The second gear 612 is connected to the output end of the turbine vane pump 611, and the second gear 612 is drivingly connected to the first gear 621.

[0146] Specifically, the inlet of the turbine vane pump 611 is the third opening 614, and the outlet of the turbine vane pump 611 is connected to the spraying device 2. Specifically, the water pump is used to suck the cooling medium to generate a certain kinetic energy, which drives the internal turbine to rotate when flowing into the turbine vane pump 611 and is converted into the rotational kinetic energy of the turbine, and then into the rotational mechanical energy of the second gear 612. Optionally, the cooling medium is pressurized by a water pump before entering the third opening 614, such as the water pump provided at the water outlet end of the cold station main unit.

[0147] In this embodiment, the turbine vane pump converts the kinetic energy of the cooling medium into the mechanical energy of the second gear, which can reduce the energy consumption of the drive assembly, save energy and reduce emissions; at the same time, the turbine vane pump is provided on the outer side wall of the bottom of the tower body, which can make full use of the kinetic energy of the cooling medium before the kinetic energy of the cooling medium is converted into gravitational potential energy, and improve the energy conversion efficiency.

[0148] In some embodiments, as Figure 1 and Figure 2 shown, the drive assembly 61 further includes:

[0149] A transmission 613, connected between the output end of the turbine vane pump 611 and the second gear 612, and the transmission ratio of the transmission 613 is adjustable; and

[0150] A rotational speed sensor, configured to detect the rotational speed of the output shaft of the transmission 613 to determine the adjustment timing of the transmission ratio of the transmission 613.

[0151] Specifically, the rotational speed sensor determines the adjustment timing of the transmission ratio of the transmission 613 according to the comparison result between the rotational speed of the output shaft of the transmission 613 and the preset speed range. Specifically, the minimum value of the preset speed range is V1, and the maximum value of the preset speed range is V2. When the rotational speed sensor detects that the rotational speed V0 < V1 or V0 > V2, the transmission ratio of the transmission 613 changes, so that the rotational speed of the output shaft is intelligently regulated to the rotational speed range V1 ≤ V0 ≤ V2, ensuring the stability of the output rotational speed.

[0152] Specifically, when the rotational speed sensor detects that the rotational speed V1 ≤ V0 ≤ V2, the transmission ratio of the transmission 613 remains unchanged. Optionally, the transmission 613 can be a continuously variable transmission, etc. Optionally, the transmission ratio of the transmission 613 can be adjusted by a motor, etc. For example, when V0 < V1 or V0 > V2, the motor starts to adjust the transmission ratio, and when V1 ≤ V0 ≤ V2, the motor does not start.

[0153] Specifically, as long as the cooling medium enters the turbine impeller pump 611 , the multiple layers of falling film components 32 will maintain a uniform rotation driven by the rotating shaft 31 under the mutual transmission action of the transmission 613 , the synchronous belts and the gears.

[0154] This embodiment can adaptively adjust the speed of the transmission output shaft through the cooperation of the transmission and the speed sensor, so that the speed is maintained within a preset speed range, which can improve the stability of the output speed of the drive component, improve the rotational stability and consistency of the multi-layer rotating shaft, and improve the operating stability of the cooling tower; at the same time, the setting of the transmission can also reduce the energy consumption of the drive component, save energy and reduce emissions.

[0155] In some specific embodiments, such as Figures 1 to 9 As shown, the cooling medium enters the turbine impeller pump 611 through the third opening 614. After entering the turbine impeller pump 611 at a high flow rate under water pump pressure, the cooling medium drives the turbine to rotate at high speed. The turbine impeller pump 611 drives the internal gear of the transmission 613 via the transmission shaft, and the transmission 613 transmission shaft drives the second gear 612. The second gear 612 rotates synchronously with the third gear 623 via a first timing belt 626. Because the third gear 623 is coaxially connected to the first gear 621, two adjacent first gears along the second direction y mesh with each other. As a result, the multiple first gears 621 in the first layer rotate synchronously, and the multiple falling film assemblies 3 in the first layer rotate synchronously. The fourth gear 624 is coaxially connected to the first gear 621. The fourth gear 624 and the third gear 623 are both located in the first layer. The fourth gear 624 and the fifth gear 625 rotate synchronously via a second timing belt 627. Because the fifth gear 625 is coaxially connected to the first gear 621, the multiple first gears 621 in the second layer rotate synchronously, and the multiple falling film assemblies 3 in the second layer rotate synchronously. Therefore, as long as the cooling medium enters the turbine impeller pump 611, under the mutual transmission of the transmission 613, the synchronous belts and the gears, the multi-layer falling film components 32 will maintain uniform and synchronous rotation driven by the rotating shaft 31.

[0156] Secondly, the present disclosure also proposes a cooling tower control method based on the above embodiment, including:

[0157] When the speed of the output shaft of the transmission 613 is greater than the maximum value of the preset speed range, reducing the transmission ratio of the transmission 613;

[0158] When the rotation speed of the output shaft of the transmission 613 is less than the minimum value of the preset speed range, the transmission ratio of the transmission 613 is increased.

[0159] The control method of this embodiment can adaptively adjust the speed of the transmission output shaft to maintain the speed within a preset speed range, thereby improving the stability of the output speed of the drive component, improving the rotational stability and consistency of the multi-layer rotating shaft, and improving the operating stability of the cooling tower.

[0160] In addition, the present disclosure also proposes a refrigeration system, comprising:

[0161] condenser; and

[0162] The cooling tower of the above embodiment is used to cool the high-temperature cooling medium from the condenser.

[0163] Specifically, the refrigerant in the condenser exchanges heat with a low-temperature cooling medium from a cooling tower or the like to generate a high-temperature cooling medium, and the cooling tower cools the high-temperature cooling medium from the condenser, forming a dynamic cycle.

[0164] Specifically, when the cooling medium is cooling water, the cooling tower cools the cooling water through the ambient air flowing from the first opening 11 to the second opening 12. The low-temperature cooling water is used to pass into the condenser in the refrigeration system to take away the heat of the gaseous refrigerant. After heat exchange, the high-temperature cooling water enters the turbine impeller pump 611 through the third opening 614, which not only drives the rotating shaft 31 to rotate, but also cools after being sprayed by the spray device 2.

[0165] The cooling tower of the refrigeration system of this embodiment has high heat exchange efficiency and can continuously and stably provide low-temperature cooling medium. The cooling tower has high operating stability and low energy consumption, which can reduce the energy consumption of the refrigeration system and save the operating cost of the refrigeration system.

[0166] The above is a detailed introduction to a cooling tower and refrigeration system provided by the present disclosure. Specific examples are used herein to illustrate the principles and implementation methods of the present disclosure. The description of the above examples is only intended to help understand the method and core concept of the present disclosure. It should be noted that for ordinary technicians in this technical field, without departing from the principles of the present disclosure, several improvements and modifications can be made to the present disclosure, and these improvements and modifications also fall within the scope of protection of the claims of the present disclosure.

Claims

1. A cooling tower, characterized in that: include: A tower body (1) comprising a first opening (11) and a second opening (12), wherein the first opening (11) is arranged at a bottom area of ​​the tower body (1) for air intake, and the second opening (12) is arranged at a top area of ​​the tower body (1) for air discharge; A spray device (2), arranged in the tower body (1) and located in the upper region of the tower body (1), configured to spray the cooling medium introduced from the liquid inlet pipe; and A falling film assembly (3) is arranged in the tower body (1) and below the spray device (2), the falling film assembly (3) comprising a rotating shaft (31) and a falling film component (32), the rotating shaft (31) extending along a first direction (x) and rotatably connected to the side wall of the tower body (1), the falling film component (32) being fixedly connected to the rotating shaft (31), and the falling film assembly (3) being configured to convert the falling cooling medium into a liquid film and disperse it.

2. The cooling tower according to claim 1, characterized in that The falling film assembly (3) comprises a plurality of falling film components (32), and the plurality of falling film components (32) are arranged at intervals along the first direction (x).

3. The cooling tower according to claim 2, characterized in that: It comprises a plurality of falling film assemblies (3) arranged at intervals along a second direction (y), the falling film components (32) of two adjacent falling film assemblies (3) being arranged alternately along the first direction (x), and the second direction (y) being perpendicular to the first direction (x).

4. The cooling tower according to claim 1, characterized in that: It comprises a plurality of falling film assemblies (3) spaced apart along a second direction (y), wherein the second direction (y) is perpendicular to the first direction (x), and the falling film assemblies (3) are spaced apart in multiple layers along a height direction.

5. The cooling tower according to claim 4, characterized in that The rotating axes (31) of two adjacent layers of the falling film assemblies (3) are arranged in a staggered manner.

6. The cooling tower according to claim 4, characterized in that: In two adjacent layers of falling film assemblies (3), the number of the falling film assemblies (3) in the upper layer is one less than the number of the falling film assemblies (3) in the lower layer.

7. The cooling tower according to claim 4, characterized in that: Also includes: The first liquid baffle plate (4) is arranged in the tower body (1) and is located between two adjacent layers of the falling film assemblies (3) in the height direction. The first liquid baffle plate (4) is provided with a plurality of through holes.

8. The cooling tower according to claim 7, characterized in that The first liquid blocking plate (4) comprises a first curved portion (41), the first curved portion (41) protrudes upward as a whole, and the first curved portion (41) is configured to shield the upwardly flowing cooling medium generated by the rotation of the adjacent falling film assembly (3) below.

9. The cooling tower according to claim 1, characterized in that: Also includes: The second liquid baffle plate (5) is arranged in the tower body (1) and is located between the spray device (2) and the falling film assembly (3) in the height direction. The second liquid baffle plate (5) is provided with a plurality of through holes.

10. The cooling tower according to claim 9, characterized in that The second liquid blocking plate (5) comprises a second curved portion (52), the second curved portion (52) protrudes upward as a whole, and the second curved portion (52) is configured to shield the upwardly flowing cooling medium generated by the rotation of the adjacent falling film assembly (3) below.

11. The cooling tower according to claim 1, characterized in that: The falling film component (32) comprises a plurality of falling film units (320) arranged along the circumference of the rotating shaft (31), and the falling film units (320) comprise: A first plate (321), one end of which is connected to the rotating shaft (31), and is configured to spread the cooling medium on the surface of the plate to form a liquid film; and The second plate (322) is connected to one end of the first plate (321) away from the rotating shaft (31), and the second plate (322) forms a preset angle with the first plate (321). The second plate (322) is provided with a plurality of through holes, and the second plate (322) is configured to break up the liquid film.

12. The cooling tower according to claim 11, characterized in that The second plate (322) is an arc-shaped plate, and the center of the circle on which the arc-shaped plate is located is located on the rotation axis of the rotation shaft (31).

13. The cooling tower according to claim 11, characterized in that The second plate (322) comprises a first part (301) and a second part (302), wherein the first part (301) and the second part (302) are respectively located on both sides of the first plate (321) along the thickness direction, and ends of the first part (301) and the second part (302) away from the first plate (321) are both inclined toward a direction close to the rotation axis (31).

14. The cooling tower according to claim 11, characterized in that The second plate (322) includes a first portion (301) and a second portion (302), and the first portion (301) and the second portion (302) are symmetrically arranged relative to the first plate (321).

15. The cooling tower according to claim 11, characterized in that The first plate (321) is provided with a plurality of protrusions (324), and the protrusion amounts of the plurality of protrusions (324) gradually decrease from an end close to the rotating shaft (31) to an end far from the rotating shaft (31).

16. The cooling tower according to claim 11, characterized in that The falling film unit (320) comprises two first plates (321) and two second plates (322), and the falling film unit (320) further comprises: A connecting portion (323) connected between two adjacent first plates (321) at one end close to the rotating shaft (31); a side of the connecting portion (323) close to the rotating shaft (31) is an arc-shaped end surface (325); and the falling film unit (320) is detachably connected to the rotating shaft (31) via the connecting portion (323); Among them, the rotating shaft (31) is provided with a plurality of accommodating grooves (310) at the same axial position along the circumferential direction, the accommodating grooves (310) extend along the first direction (x), and the accommodating grooves (310) are configured to cooperate with the arc-shaped end surface (325) of the connecting portion (323), and the plurality of accommodating grooves (310) are arranged one-to-one with the plurality of falling film units (320) along the circumferential direction.

17. The cooling tower according to claim 16, characterized in that The rotating shaft (31) is provided with a plurality of receiving grooves (310) along the first direction (x), and a plurality of falling film units (320) are provided along the first direction (x). The plurality of receiving grooves (310) are arranged in a one-to-one correspondence with the plurality of falling film units (320) along the first direction (x).

18. The cooling tower according to claim 16, characterized in that The connecting portion (323) is provided with a first limiting portion (326), and the first end of the accommodating groove (310) is provided with a second limiting portion (312), and the first limiting portion (326) and the second limiting portion (312) cooperate to axially limit the falling film unit (320).

19. The cooling tower according to claim 18, characterized in that A mounting groove (311) is provided between the second end of the accommodating groove (310) and the shaft body of the rotating shaft (31), and the mounting groove (311) is configured to provide a space so that the falling film unit (320) can selectively slide along the first direction (x).

20. The cooling tower according to any one of claims 1 to 19, characterized in that: Also includes: A driving mechanism (6) is arranged on the outer wall of the tower body (1) and is configured to drive the rotating shaft (31) to rotate. The driving mechanism (6) comprises a driving assembly (61) and a transmission assembly (62). The transmission assembly (62) comprises a first gear (621). The first gear (621) is fixedly connected to the rotating shaft (31). The output end of the driving assembly (61) is transmission-connected to the first gear (621). The driving assembly (61) is configured to drive the first gear (621) to rotate.

21. The cooling tower according to claim 20, characterized in that It comprises a plurality of falling film assemblies (3) spaced apart along a second direction (y), wherein the second direction (y) is perpendicular to the first direction (x), and the transmission assembly (62) comprises a plurality of first gears (621), wherein the plurality of first gears (621) are arranged in one-to-one correspondence with the plurality of rotating shafts (31), and two adjacent first gears (621) along the second direction (y) are meshed with each other.

22. The cooling tower according to claim 21, characterized in that The transmission assembly (62) further comprises a third gear (623) and a first synchronous belt (626); the third gear (623) is coaxially connected to the first gear (621); and the first synchronous belt (626) is connected between the output end of the drive assembly (61) and the third gear (623).

23. The cooling tower according to claim 22, characterized in that The falling film assembly (3) is provided with a first layer and a second layer in a height direction, the first layer is lower than the second layer, the third gear (623) is fixedly connected to one of the first gears (621) of the first layer, and the transmission assembly (62) further comprises: a fourth gear (624), fixedly connected to another first gear (621) of the first layer; a fifth gear (625) fixedly connected to one of the first gears (621) of the second layer; and The second synchronous belt (627) is connected between the fourth gear (624) and the fifth gear (625).

24. The cooling tower according to claim 20, characterized in that The driving assembly (61) further comprises: A turbo impeller pump (611) configured to convert the kinetic energy of the cooling medium into mechanical energy for rotation of the output end; and The second gear (612) is connected to the output end of the turbine impeller pump (611), and the second gear (612) is drivingly connected to the first gear (621).

25. The cooling tower according to claim 24, characterized in that The driving assembly (61) further comprises: a transmission (613), connected between the output end of the turbine vane pump (611) and the second gear (612), wherein the transmission ratio of the transmission (613) is adjustable; and A rotation speed sensor is configured to detect the rotation speed of the output shaft of the transmission (613) to determine the timing for adjusting the transmission ratio of the transmission (613).

26. A refrigeration system, characterized in that: include: Condenser; and The cooling tower according to any one of claims 1 to 25 is used to cool the high-temperature cooling medium from the condenser.

Images